Ore-jigger



(No Model.)

D. HILL 8v G. W. HALL.

ORE JIGGER.

Patented Nov. 1, 1887.

INVENTOR WITNESSES ATTORNEYS.

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DAVID HILL AND GEORGE W. HALL, OF GEORGETOWN, COLORADO.

.ORE-JIGGER.

SPECIFICATION forming part of Letters Patent No. 372,469, dated November 1,1887.

Application filed DeeemberQB, 1886. Serial No. 222,363. (No model.)

To aZZ 2077,0172, it may concern:

Be it known that we, DAVID HILL and GEORGE \V. HALL, of Georgetown, in the county of Clear Creek and State of Colorado, have invented a new and useful Improvement in Ore-Jiggers, of which the following is a full, clear, and exact description.

The invention consists in the construction of the j igger, as hereinafter described and clai med.

Reference is to be had to the accompanying drawing, forming a part of this specification, in which the figure is a sectional elevation of a double ore-jigger constructed in accordance with and to carry out our invention.

The inclosing-walls of the jigger are constructed to form the compartments A and side compartments, B, which communicate with the compartments A below the partitions O and vertically-movable gates D. The compartments B are closed at the top by the block E, in a chamber, F, of which is fitted a rotary valve, F. The val ve-chambcr F is put in communication with the compartments B by the slots a, which are alternately opened and closed by the solid portions of the valve, and the slot a in the valve, which communicates with the hollow interior of the valve F. A constant pressure of air, steam, or gas is supplied to the interior of the valve F through the pipe G and slot or opening b in the top of the valve, and the valve is reciprocated circularly in its chamber by the crank d and connecting-rodf, which is reciprocated by any suitable motor. The reciprocation of the valve F alternately brings the opening a of the valve into line with the slots a and admits a sudden blast of compressed air, steam, or other gas upon the surface of the water in the compartments B, which suddenly forces the water downward in said compartments and as suddenly elevates it in the compartments A, which operation being rapidly repeated causes the desired pulsations of water in the compartments A for washing and separating the ore supplied thereto upon the perforated tables H. The exhaust of compressed air from the compartments B is through the exhaust-passages c of the valve F and the openings 0 in the valve-casing.

The gates D are adapted to be raised or lowered for regulating the intensity of the pulsations, and for this purpose are provided each with racks k, with which pinions i on shafts Z engage, so that by turning said shafts the gates may be easily adjusted. The shafts Z may be turned by a crank applied to one end thereof projecting at the side of the water-tanks.

Having thus described our invention, what we claim as new, and desi re to secure by Letters Patent, is

The compartments A A and B B of an orejigger, and the top block, E, covering both compartments B, and formed with the valvecasing having passages a a and c c and inlet pipe G, in combination with the oscillating hollow valve F, having inlet-passage b, passages a c, and exhaust-passages c c, and means for oscillating said valve, substantially as and for the purposes set forth.

DAVID HILL. GEORGE XV. HALL.

Witnesses:

CIIAs. N. TInBI'r'rs, CHAS. H. J AOOBSON. 

